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AndyCW

Eurobricks Citizen
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Everything posted by AndyCW

  1. AndyCW
    What are the two gears in the transmission? The body looks a little short. Like it was put in a compactor and flattened. I'm sure the performance is good. When can we expect a video? v/r Andy
  2. AndyCW
    Looks much better. I don't care for the caster angle on the front, but that is hard to deal with. I look forward to a video of the performance. v/r Andy
  3. AndyCW
    I purchased and have been testing the portal hubs along with the u-joints. I am running 2x unrestricted 5292 motors through them. So far so good. This rock bouncer I m building is pretty stout. About 5:1 gearing, 3 cell Lipo, after market tires, and less than 1.5 Kg. v/r Andy
  4. AndyCW
    Everyone's always asking for instructions of your work. This is much bet than the WIP approach. v/r Any
  5. AndyCW
    Holy smokes!! This thing has detail. It's not just recognizable as a Landrover, it is a Landrover. v/r Andy
  6. AndyCW
    Looks good. It might be a little overbuilt, but you'll figure out the delicate balancing act between strength and weight. The link mounts look kind of questionable though. The angle of the links can lead to problems. The greater the angle, the more likely for them to pop off of the ball joints or the ball joints to click out of the liftarms. v/r Andy
  7. AndyCW
    The servo protruding out the bottom of the chassis concerns me. It sure looks like fun. v/r Andy
  8. AndyCW
    Does this mean that you are starting university or are finishing? I'm not so sure how European post secondary education works. Either way congrats. v/r Andy
  9. AndyCW
    The strength of the u-joints is relative to the angle that they operate under. In the above case, where the u-joint directly drives the wheel, poses some issues. Depending on the power level and the wheel size, the u-joints are in real danger of breakage. Nic Jasno made a live axle that uses portal hubs and incudes kingpin inclination. It does resolve some of the issues that have been mentioned. You can find the video by searching on Youtube for LPE Power Unimog. If reinforced and widened, they can withstand some power, but the inclusion of the cv joints is the weak point. v/r Andy
  10. AndyCW
    That's huge and awesome. v/r Andy
  11. AndyCW
    Cool little droid. What is his nomenclature? R6-D6? v/r Andy
  12. AndyCW
    I love the simplicity of the track tensioners. v/r Andy
  13. AndyCW
    These new tires are screaming for this kind of stuff. I might have worked on putting MT figures inside the car or at least posed them with it. Mine have been sitting in a plastic box since I was a kid. ~20 years or so. v/r Andy
  14. AndyCW
    I like the electric bass part of the video. You should do that in more of your presentations. Many of functions were coupled, controlled manually, or always on. v/r Andy
  15. AndyCW
    Another awesome job. It seems like it has more than enough torque. Did you try any other gear ratios? 25:1 with XLs may be overkill. v/r Andy
  16. AndyCW
    That's good. It does seem to be more stable than the real thing though. Now you need a Jeremy Clarkson figurine to ride around in it and complain about the car. v/r Andy
  17. AndyCW
    After some more research, I may have found my issue. The ESC that I have is for an aircraft and is therefore unidirectional. My RC Lego creation would not have reverse. Taking this element out of the equation would mean that needed two brushed bidirectional speed controllers instead of just one. Those motor control boards from Pololu are beginning to look more enticing. v/r Andy
  18. AndyCW
    One of the obvious issues I ran into when researching this is that RC systems run on a three wire setup Power, Ground, and Signal. Whereas; the PF servo runs on a four wire setup Power, Ground, Control1, and Control2. Z3_2drive has a motor controller board that does this, but it also functions as the speed controller and costs a little too much. I need less functionality and a lower price. Does the PF servo operate at something other than the 1000 to 2000 pwm with 1500 being center position? v/r Andy
  19. AndyCW
    I've got the following a 35Amp brushed speed controller w/ BEC a 2.4 gHz radio and receiver I want to connect the PF Servo into the 2.4 ghz receiver, but don't know how. Is this possible? I have been searching with Google and have read lots of peoples posts about making custom systems, but nothing on this specific topic has turned up. I know several members here have managed something similar. Any advice or references would be greatly appreciated. v/r Andy
  20. AndyCW
    Ha! It needs to roll over like the real thing. No training wheels allowed. v/r Andy
  21. AndyCW
    27:1 with buggy motors is obscene and your motors are running at full power. Yikes! I once got a finger caught in a 24:8 portal hub. It drew blood v/r Andy
  22. AndyCW
    I'd like to know how you managed to break a knob gear. That takes a ridiculous amount of force. I've broken all kinds of gears in developing stuff, but never a knob gear. v/r Andy
  23. AndyCW
    I would certainly use custom parts. I have modified some lego pieces to suit my needs. Such a 3.5 and 4.5 axles, but I try to avoid it. I am considering some of Efferman's Shapeways parts to get desired gear ratios and suspension geometries. v/r Andy
  24. AndyCW
    Nice! I like the "framework" on the rear of the truck and the colors are great. v/r Andy
  25. AndyCW
    In the trial trucks and crawlers I have built with 2 buggy motors, a gear ration between 5:1 and 15:1 should be sufficient depending on weight and tire size. Your "center section" has a 24:1 reduction and that is before you ever get to the reduction in the axles. Your creation will be painfully slow and inefficient due to the worm gears. As to your question, that assembly looks like it will be fine with regards to gears popping. v/r Andy
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